【文章內(nèi)容簡介】 le with back pain are victims of inappropriate postures.【答案】 （1）D（2）D（3）A（4）C 【解析】【分析】本文是一篇說明文，介紹亞歷山大技巧的對于矯正身體的作用以及其發(fā)明者。 （1）考查推理判斷。根據(jù)第一段中的“I was brought up to think that the preferred way of dealing with aches is to do nothing and hope they39。ll go away, but I eventually went to the doctor.”可知，作者從小就被灌輸這樣的思維，處理疼痛的更好辦法就是不做任何事情，希望疼痛自行消失，但是卻最終不得不去看醫(yī)生，故可知，作者看醫(yī)生都是迫不得已，故選D。 （2）考查推理判斷。根據(jù)第二段中的“It trains you to use your body less severely and carry out the movements that we do all the time with less effort.”可知，亞歷山大技巧讓你更合理使用身體，用最小的努力來做那些習(xí)慣性的動(dòng)作，故可知，該技巧的原則就是用最小的力來做習(xí)慣性的動(dòng)作，故選D。 （3）考查推理判斷。根據(jù)倒數(shù)第二段中的“Frederick Alexander, an Australian actor born in 1869, found in his youth that he had vocal (聲音的) problems during performances. He analyzed himself and realized his posture was bad. He worked on improving it, with excellent results.”可知，弗雷德里克亞歷山大，一個(gè)出身于186年的澳大利亞演員，在年輕的時(shí)候聲音出了問題。他做了分析，意識到自己的姿勢不正確，因此致力于改善姿勢，結(jié)果很好，故可知，他通過矯正姿勢，解決了自己的聲音問題，故選A。 （4）考查主旨大意。本文介紹亞歷山大技巧的對于矯正身體的作用以及其發(fā)明者，故可知在介紹亞歷山大技巧的作用，故選C。 【點(diǎn)評】本題考點(diǎn)涉及推理判斷和主旨大意兩個(gè)題型的考查，是一篇科普類閱讀，要求考生根據(jù)上下文的邏輯關(guān)系，進(jìn)行分析，推理，概括和歸納，從而選出正確答案。4．犇犇閱讀理解 Hacking isn39。t just for puters and smartphones, According to a study published last week in the journal Science, scientists have found a way to hack a plant39。s genes in order to make it use sunlight more quickly. Someday, the results could increase the amount of food produced around the world. Photosynthesis（光合作用）is the word used to describe how plants use sunlight, water, and carbon dioxide to make their own food. Scientists who conducted the new study say this is a very slow process. Plants use less than 1 percent of the energy available to therm. But by hacking a plant39。s genes, the scientists were able to increase the amount of leaf growth on plants between 14 and 20 percent. Specifically, scientists hacked the plant39。s protective system. Normally, this system is activated when a plant gets too much sunlight, said scientist Krishna Niyogi, coauthor of the study. When the plant senses the light, it gets rid of extra energy and creates more leaves. When the plant is in shade, the protective system is turned off, but the process is slow. Stephen Long is the lead author of the study. He pared a plant39。s protective system to lightadjusting glasses. When a person wears the glasses outside during the day, the lenses（鏡片）darken and lighten depending on how sunny it is. Plants do the same thing, he said. But in plants the adjustment can take anywhere from 10 minutes to an hour. This makes it hard for plants to get the right amount of sunlight needed to create food. The new study sped up the process. By changing the plant39。s genes, the protective system turned on and off more quickly than normal. As a result, leaf growth on the plants scientists used in the study increased. Leaf growth in two plants increased by 20 percent, while leaf growth on a third plant increased by 14 percent. Scientists conducted the study on tobacco plants. But they think the genetic changes will produce the same results in corn and rice. （1）What will happen to the plants when scientists change plants39。 genes？ A.They will bee weaker and weaker.B.They will grow fast to produce more food.C.They will have more beautiful flowers.D.They will depend less on sunlight.（2）Why does the author mention lightadjusting glasses？ A.To warn people of the hot and bright sun.B.To explain the principle of plants39。 protective system.C.To help leaves of the plants absorb sunlight.D.To serve the science experiment smoothly.（3）In the future, the genetic changes will be used to. A.improve tobacco plants39。 qualityB.increase tobacco plants39。 leaves and rootsC.improve the flowers39。 living timeD.increase the production of corn and rice（4）Which of the following can be the theme of this text？ A.Hacking plants for more productionB.Leaf growing more quicklyC.Double production of tobacco plantsD.Photosynthesis and production【答案】 （1）B（2）B（3）D（4）A 【解析】【分析】本文是一篇說明文，科學(xué)家通過改變植物的基因，加快光合作用的速度，使植物葉子生長迅速，從而提高植物產(chǎn)量。 （1）考查細(xì)節(jié)理解。根據(jù)第一段中的“ scientists have found a way to hack a plant39。s genes in order to make it use sunlight more quickly. Someday, the results could increase the amount of food produced around the world. ”可知，科學(xué)家發(fā)現(xiàn)改變植物基因會使植物的光合作用速度加快，將來會增加全球植物的產(chǎn)量。故選B。 （2）考查推理判斷。根據(jù)第四段中的“ He pared a plant39。s protective system to lightadjusting glasses. When a person wears the glasses outside during the day, the lenses（鏡片）darken and lighten depending on how sunny it is. Plants do the same thing, he said. But in plants the adjustment can take anywhere from 10 minutes to an hour. ”可知，作者提到鏡片是為了說明植物的保護(hù)系統(tǒng)的工作原理與鏡片相同。故選B。 （3）考查細(xì)節(jié)理解。根據(jù)最后一段中的“ But they think the genetic changes will produce the same results in corn and rice. ”但是他們認(rèn)為基因的改變將在玉米和水稻中產(chǎn)生相同的結(jié)果?？芍xD。 （4）考查主旨大意，根據(jù)文章內(nèi)容可知，科學(xué)家改變植物的基因，加快光合作用的速度，使植物葉子生長迅速，從而提高植物產(chǎn)量。故選A。 【點(diǎn)評】本題考點(diǎn)涉及細(xì)節(jié)理解，推理判斷和主旨大意三個(gè)題型的考查，是一篇科研類閱讀，要求考生在捕捉細(xì)節(jié)信息的基礎(chǔ)上，進(jìn)一步根據(jù)上下文的邏輯關(guān)系，進(jìn)行分析，推理，概括和歸納，從而選出正確答案。5．犇犇閱讀理解 Environmental experts warn that our planet is drowning in plastic. The world39。s cities produce 2 billion tons of trash every year. By the year 2050 that number is expected to rise to 3 billion tons. The World Bank estimates that the largest amount of trash today, about 44 percent, is plastic. But we often have to buy packaged goods. And often that packaging is made of plastic. Now, that may be changing. A new environmentallyfriendly shopping model was recently launched at the World Economic Forum in Davos, Switzerland. This shopping model, called Loop, aims to replace throwaway containers with reusable ones. Loop is the idea of Terra Cycle, an Americanbased recycling pany. Its chief, Tom Szaky told the Associated Press (AP) that removing plastics from the ocean is not enough. He said the point is to get away from singleuse packages. Szaky said that Loop is the future of sho